arms
background
bark
beech
botany
boughs
branches
central
connceted
diagonal
ecology
environment
flexible
foliage
forest
growth
horizontal
large
leaf
limb
lush
natural
nature
oak
outdoors
parts
plant
ramus
shapes
shrub
sizes
splits
spray
spring
stem
sticks
structural
summer
sun
sunlight
sunshine
thick
thin
tree
trunk
twigs
underbranches
vertical
wood
woody